Vertical-shaft wind turbine

Abstract

A generator is horizontally arranged in each plane central portion of horizontal frame bodies of a support frame body which is framed with the upper and lower horizontal frame bodies and a plurality of support poles, and a vertical main shaft of a vertical shaft rotor is integrally connected and supported between rotation shafts vertically facing each other of the upper and lower generators without using bearings to cooperatively move.

What is claimed is: 
     
       1. A vertical-shaft wind turbine comprising:
 a plurality of lift-type vertical blades arranged at fixed intervals around a vertical main shaft of a vertical shaft rotor, wherein each of the plurality of lift-type vertical blades has a substantially vertical main portion and upper and lower inward circular arc-shaped portions that are respectively and continuously formed from a top and a bottom of the substantially vertical main portion to respectively elongate toward the vertical main shaft, a tip portion of the upper inward circular arc-shaped portion is fixed to a fixing portion of an upper blade fixture arranged on the vertical main shaft, and a tip portion of the lower inward circular arc-shaped portion is fixed to a fixing portion of a lower blade fixture arranged on the vertical main shaft; 
 wherein the vertical-shaft wind turbine further comprises a support frame body which is framed with horizontal frame bodies horizontally arranged in upper and lower stages and a plurality of support poles, and a generator which is horizontally arranged in each plane central portion surrounded by inner frames respectively provided in the horizontal frame bodies, 
 wherein an upper generator arranged in the upper horizontal frame body has a rotation shaft vertically protruding downward from a lower surface of the upper generator, a lower generator arranged in the lower horizontal frame body has a rotation shaft vertically protruding upward from an upper surface of the lower generator, upper and lower end portions of the vertical main shaft of the vertical shaft rotor are respectively coupled with a lower end portion of the rotation shaft vertically protruding downward from the upper generator and an upper end portion of the rotation shaft protruding upward from the lower generator thereby forming a seam between the vertical main shaft and the respective rotation shafts of the upper and lower generators, such that the vertical main shaft of the vertical shaft rotor is concentrically and directly connected between both rotation shafts of the upper and lower generators, and 
 wherein an outer peripheral side of the seam between the vertical main shaft and the respective rotation shafts of the upper and lower generators is sheathed with a covering body for preventing decoupling; and 
 wherein upper and lower end portions of the vertical main shaft of the vertical shaft rotor are respectively coupled and supported between both rotation shafts of the upper and lower generators without using bearings so as to be concentrically and vertically aligned and move cooperatively to reduce torsion and vibration when rotating. 
 
     
     
       2. The vertical-shaft wind turbine according to  claim 1 , wherein the horizontal frame bodies of the support frame body are arranged in upper, intermediate, and lower stages, an upper vertical shaft rotor is arranged between the upper horizontal frame body and an intermediate horizontal frame body, a lower vertical shaft rotor is arranged between the intermediate horizontal frame body and the lower horizontal frame body, and the generator is horizontally arranged in each of the plane central portions respectively surrounded by the inner frames respectively provided in the horizontal frame bodies;
 wherein the upper generator arranged in the upper horizontal frame body has the rotation shaft vertically protruding downward from the lower surface of the upper generator, the intermediate generator arranged in the intermediate horizontal frame body has a rotation shaft vertically protruding upward and downward respectively from an upper surface and a lower surface of the intermediate generator, the lower generator arranged in the lower horizontal frame body has the rotation shaft vertically protruding upward from the upper surface of the lower generator; 
 wherein upper and lower end portions of the vertical main shaft of the upper vertical shaft rotor are respectively coupled with the lower end portion of the rotation shaft vertically protruding downward from the upper generator and an upper end portion of the rotation shaft protruding upward from the intermediate generator such that the vertical main shaft of the upper vertical shaft rotor is concentrically and directly connected between the both rotation shafts of the upper and intermediate generators, and an outer peripheral side of a seam between the vertical main shaft and the respective rotation shafts of the upper and intermediate generators is sheathed with a corresponding covering body for preventing decoupling, thereby supporting the vertical main shaft of the upper vertical shaft rotor between the both rotation shafts of the upper and intermediate generators without using bearings; 
 wherein upper and lower end portions of the vertical main shaft of the lower vertical shaft rotor are respectively coupled with the lower end portion of the rotation shaft vertically protruding downward from the intermediate generator and the upper end portion of the rotation shaft protruding upward from the lower generator such that the vertical main shaft of the lower vertical shaft rotor is concentrically and directly connected between both rotation shafts of the intermediate and lower generators, and an outer peripheral side of a seam between the vertical main shaft and the respective rotation shafts of the intermediate and lower generators is sheathed with a corresponding covering body for preventing decoupling, thereby supporting the vertical main shaft of the lower vertical shaft rotor between the both rotation shafts of the intermediate and lower generators without using bearings; and 
 wherein the rotation shaft of the upper generator, the vertical main shaft of the upper vertical shaft rotor, the rotation shaft of the intermediate generator, the vertical main shaft of the lower vertical shaft rotor, and the rotation shaft of the lower generator are connected and supported to be concentrically and vertically aligned and to be cooperatively movable. 
 
     
     
       3. The vertical-shaft wind turbine according to  claim 2 , wherein the lower end portion of the rotation shaft of the upper generator includes a transverse recessed portion which is recessed in a shaft direction and elongates in a transverse direction;
 wherein the upper and lower end portions of the rotation shaft of the intermediate generator respectively include a transverse recessed portion which is recessed in a shaft direction and elongates in a transverse direction; 
 wherein the upper end portion of the rotation shaft of the lower generator includes a transverse recessed portion which is recessed in a shaft direction and elongates in a transverse direction, 
 wherein the upper and lower end portions of the vertical main shaft of the upper vertical shaft rotor respectively include a transverse protruding portion which projects in the shaft direction and elongates in a transverse direction; 
 wherein the upper and lower end portions of the vertical main shaft of the lower vertical shaft rotor respectively include a transverse protruding portion which projects in a shaft direction and elongates in a transverse direction; 
 wherein the transverse protruding portions respectively formed on the upper and lower end portions of the vertical main shaft of the upper vertical shaft rotor are respectively fit to the transverse recessed portion on the lower end portion of the rotation shaft of the upper generator and the transverse recessed portion on the upper end portion of the rotation shaft of the intermediate generator such that the vertical main shaft of the upper vertical shaft rotor is concentrically and directly connected between both rotation shafts of the upper and intermediate generators, and an outer peripheral side of a seam between the vertical main shaft and the respective rotation shafts of the upper and intermediate generators is sheathed with a corresponding covering body for preventing decoupling; and 
 wherein the transverse protruding portions respectively formed on the upper and lower end portions of the vertical main shaft of the lower vertical shaft rotor are respectively fit to the transverse recessed portion on the lower end portion of the rotation shaft of the intermediate generator and the transverse recessed portion on the upper end portion of the rotation shaft of the lower generator such that the vertical main shaft of the lower vertical shaft rotor is concentrically and directly connected between both rotation shafts of the intermediate and lower generators, and an outer peripheral side of a seam between the vertical main shaft and the respective rotation shafts of the intermediate and lower generators is sheathed with a corresponding covering body for preventing decoupling. 
 
     
     
       4. The vertical-shaft wind turbine according to  claim 1 , wherein the lower end portion of the rotation shaft of the upper generator and the upper end portion of the rotation shaft of the lower generator include respectively a transverse recessed portion which is recessed in a shaft direction and elongated in a transverse direction, and the upper and lower end portions of the vertical main shaft of the vertical shaft rotor include respectively a transverse protruding portion which is projected in the shaft direction and elongated in a transverse direction; and
 wherein the transverse protruding portions formed respectively on the upper and lower end portions of the vertical main shaft of the vertical shaft rotor are respectively fit to the transverse recessed portion on the lower end portion of the rotation shaft of the upper generator and the transverse recessed portion on the upper end portion of the rotation shaft of the lower generator such that the vertical main shaft of the vertical shaft rotor is concentrically and directly connected between both rotation shafts of the upper and lower generators, and the outer peripheral side of the seam between the vertical main shaft and the respective rotation shafts of the upper and lower generators is sheathed with the covering body for preventing decoupling.